TmpNet on Local Networks

[felipemadero]

Why this should be merged

Closes #2509 #2510 #2511

Replaces ANR with TmpNet for implementation of local network deploys.

How this works

How this was tested

How is this documented

[maru-ava]

My apologies for the delay! As suggested, this review is limited in scope to the areas mentioned in channel. My broad recommendations:

• Maybe try to minimize reading tmpnet networks sincetmpnet.ReadNetwork both reads network and node configuration from disk but also reads the nodes' process context files and checks if the nodes are running. Not super expensive but also not something I'd suggest executing in a wait loop.
• Feel free to propose the export of functions/methods from the tmpnet package where it makes sense, especially those providing paths to files that tmpnet reads and writes from since that behavior needs to stay synchronized.